1.Microwave Effect on the Cycloaddition of Fulvene 2.Novel [ 6+2 ] Cycloaddition of Fulvene with Alkenes

• Main Authors: Shr Yeong-Jou, 施勇州
• Other Authors: Hong Ber-Cherng
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/76769813602409474534

碩士 === 國立中正大學 === 化學研究所 === 90 === Part Ⅰ：Microwave effect on the cycloaddition of fulvene Novel cycloaddition reactions between fulvene and various alkenes and alkynes are promoted by the use of microwave irradiation. These processes result in the formation of intriguing polycyclic ring systems such as those found in isobarbatene, alcyopterosin, and enokipodin A. Importantly, these reactions do not occur under conventional thermolytic conditions. Part Ⅱ：Novel [6+2] cycloaddition of fulvene with alkenes In contrast to the Diels-Alder reaction of fulvene and various alkenes, 6-aminofulvene react with maleic anhydride ( or maleimide ) to give [6+2] cycloaddition adducts, constituting an efficient and novel route to pentaleno[1,2-c]furan, pentaleno[1,2-c]pyrrole, and cyclopenta[a]pentalene skeleton.